Matches 351 - 400 out of 511 < 1 2 3 4 5 6 7 8 9 10 11 >
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4259511 Process for separating selenium, selenium compounds, sulfur and/or sulfur compounds from polyurethanes containing these elements and/or compounds  
A process for separating selenium, selenium compounds, sulfur and/or sulfur compounds from urethanes containing these elements and/or compounds by reacting said urethanes with an aqueous...
4258201 Process for the manufacture of carbamates  
A process for the production of carbamates is provided in which an organic primary or secondary amine is contacted, in the substantial absence of reactive oxygen, with a source of carbon monoxide,...
4258181 Substituted 9,10-anthracenebishydrazones  
This disclosure describes anthracene-9,10-bis-carbonyl-hydrazones and derivatives thereof useful as antibacterial agents, for inhibiting the growth of transplanted mouse tumors, and for inducing...
4251667 Process for the preparation of aromatic urethanes  
A process for the preparation of aromatic urethanes by reacting an aromatic amine, an alcohol and carbon monoxide in the presence of a catalytic quantity of a copper salt, oxygen and a dehydrating...
4246260 Substituted omicron-phenylenediamine derivatives, process for their preparation and their use as medicaments  
The invention relates to new substituted o-phenylenediamine derivatives of the general formula ##STR1## in which R represents optionally substituted alkyl, optionally substituted alkenyl or...
4243815 Preparation of methylene-bis(4-phenylcarbamic acid esters)  
A process for the preparation of methylene-bis-(4-phenylcarbamic acid esters), wherein an N-phenylcarbamic acid ester is reacted with a formaldehyde-acetal in the presence of an acid at up to 200° C.
4242520 Promoted method for producing carbamates  
A process for the production of carbamates is provided which comprises contacting an organic primary or secondary amine with a source of carbon monoxide, an organic compound containing at least one...
4236016 Process for the preparation of urethanes  
The instant invention relates to an improved process for the preparation of urethanes by the reaction of aromatic nitro compounds with alcohols and carbon monoxide in the presence of catalyst...
4235996 Bis(2-imida zolin-2-ylhydrazone)-9,10-dihydro-9,10-anthracenedicarboxaldehydes  
This disclosure describes 9,10-dihydroanthracene-9,10-dicarboxaldehyde-bis-hydrazones and derivatives thereof useful as antibacterial agents, for inhibiting the growth of transplanted mouse tumors,...
4234714 Preparation of single-phase, urethane prepolymers from hydroxy-terminated diene polymers  
A process is described for the preparation of urethane prepolymers from hydroxy-terminated diene polymers and normally liquid, relatively non-volatile, aromatic polyisocyanates. The prepolymers are...
4230877 Method for increasing the 4,4'dicarbamate isomer of the diphenylmethane dicarbamates during preparation thereof  
A method for increasing the 4,4' disubstituted isomer of the diphenylmethane dicarbamates produced by the acid catalyzed condensation of an N-aryl carbamic acid ester, such as ethylphenylcarbamate,...
4230857 Carbonates and urethanes of 2,2'-alkylene or -cycloalkylene-bis-4,6-disubstituted phenols as stabilizers for organic materials  
Carbonates and urethanes of 2,2'-alkylene or -cycloalkylene-bis-4,6-disubstituted phenols are useful for stabilizing organic materials against the degradative effects of oxygen.
4227008 Process for preparing aromatic urethanes  
Aromatic urethanes can be produced by interacting an aromatic primary amino compound having a nitro group, a nitroso group or a carbamate group, an organic compound having at least one hydroxyl...
4224417 High molecular weight polyamines and their use in preparation of polyurethane resins  
The invention relates to new polyamines, preferably containing polyether segments, a process for their preparation and their use as starting components for the production of polyurethane resins....
4215205 Fluoroaliphatic radical and carbodiimide containing compositions for fabric treatment  
Durably launderable and dry-cleanable repellency to water and oil is conferred on fabrics consisting essentially completely of hydrophobic synthetic fibers by application of a blend of a...
4202986 Preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates with Lewis acid catalysts intercalated in graphite  
Diphenylmethane dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are produced by the condensation of N-aryl carbamic acid esters, such as...
T994004 Process for the preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates using solid acid catalysts  
Diphenylmethane dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are produced by the condensation of N-aryl carbamic acid esters, such as...
4196302 Quaternary phosphonium salts bearing carbamate groups  
Novel quaternary phosphonium salts, bearing one or more carbamate groups attached through nitrogen, are prepared by condensing a hydroxymethyl phosphonium salt having the formula [R 4 -n P(CH 2 ...
4186269 Process for producing an aromatic urethane  
An aromatic urethane is obtained at high yield without involving corrosion of a stainless steel reactor by interacting an aromatic nitro compound, an organic compound having at least one hydroxyl...
4180673 Electron beam sensitive monomer  
Electron-beam sensitive monomers contain two to three terminal acryloxy and one intermediate divalent or trivalent hydrocarbylene group the valences of which are respectively linked in each case by...
4178455 Process for preparing aromatic urethanes  
In a process for preparing an aromatic urethane which comprises reacting an aromatic nitro compound, an organic compound containing at least one hydroxyl group, and carbon monoxide at elevated...
4172948 Preparation of diphenylmethane mono and dicarbamates and polymethylene polyphenyl carbamates  
Diphenylmethane mono and dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are prepared by employing a superatmospheric pressure of anhydrous hydrogen...
4164414 N-methylcarbanilic-[3-(ethoxycarbonylamino)-phenyl]-ester as a cotton herbicide  
N-methylcarbanilic-[3-(ethoxycarbonylamino)-phenyl]-ester. The compound is a specific cotton herbicide. It is highly active against common weeds without causing harm to the cotton plants at any...
4163019 Production of 4,4'-alkylidene diphenyl diisocyanate  
A process for the production of 4,4'-methylene diphenyl diisocyanate (4,4'-MDI) to the substantial exclusion of other position isomers and of higher oligomers comprises a coupling reaction in which...
4160866 Carbamates  
Carbamate compounds of the formula: R 1 --O.CO.NHO.CO.X.CO.OHN.CO.O--R 1 (1) in which CO.X.CO is the diacyl radical of a polybasic carboxylic acid, and R 1 is an optionally...
4160077 Process of crosslinking unsaturated hydrocarbon polymers employing novel carbamates  
A process for the cross-linking or chain extension of hycrocarbon polymers which contain ethylenically unsaturated groups which comprises forming an intimate mixture of the polymer with a carbamate...
4150142 Derivatives of alkoxy-5-phenyl-3 oxadiazoline-1,3,4 one-2, their preparation and insecticidal and acaricidal compositions which contain them  
The invention pertains to certain oxadiazolinones of the formula: ##STR1## in which R represents an alkyl radical containing 1 to 4 carbon atoms and R 1 represents an alkyl radical containing 2 to...
4146727 Process for the preparation of diphenylmethane mono and dicarbamates and polymethylene polyphenyl carbamates by the acid rearrangement of an (alkoxycarbonyl) phenylaminomethylphenyl compound  
Diphenylmethane mono and dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are produced by the protonic or Lewis acid catalyzed rearrangement of an...
4134880 Process for producing an aromatic urethane from nitro compounds, hydroxyl compounds and carbon monoxide using metal-Lewis acid-ammonia catalyst systems  
An aromatic urethane of high quality and excellent heat stability can be produced in high yield by reacting an aromatic nitro compound, a hydroxyl group-containing organic compound and carbon...
4130633 Removal of selenium from urethane solutions  
A method for the removal and recovery of selenium from a urethane solution containing selenium compounds, which may be in the form of inorganic selenium and/or organoselenium compounds, which...
4130645 Fungicidal phenylnitramines and new phenylnitramines  
The present invention relates to novel methods for the protection of agricultural crops against plant pathogenic fungi comprising applying to the foliage of said crops a fungicidally effective...
4127670 2-Formamido phenylguanidines and processes for their preparation and use  
N-(2-formamidophenyl)-N',N"-bis-carbonylguanidines bearing an optionally substituted phenoxy, phenylthio, phenylsulfinyl or phenylsulfonyl group in the 4- or 5-position of the 2-(formamido)-phenyl...
4113748 Fluorine and sulfur-containing compositions  
The invention concerns epoxides and alcohols of the structures ##STR1## and [R f (CH 2 ) n SCH 2 ] 2 CHOH and various derivatives thereof useful in leather and textile treatment.
4108840 Urea-urethane-acrylate radiation curable coating compositions and methods of making same  
Urea-linked urethane-modified acrylate-capped resins provide radiation curable coating compositions of exceptional durability and flexibility and which are essentially free of volatile solvents....
4100351 Method for preparing aromatic urethans  
In the preparation of aromatic urethans, a dialkyl carbonate is reacted with an N-acyl derivative of an amine: thus, for example, by reacting acetanilide with a lower dialkyl carbonate, such as DMC...
4088780 Substituted phenylguanidines and processes for their preparation and use  
N-[2-(Substituted amido)phenyl]-N',N"-bis-carbonylguanidines bearing an optionally substituted phenoxy, phenylthio, phenylsulfinyl or phenylsulfonyl group in the 4- or 5-position of the...
4082779 Acylation process for the preparation of steroid phenolic n-disubstituted carbamate esters, and ion pair solution for use in the process  
This invention relates to a novel carbamoylation method for the preparation of steroid phenolic N-disubstituted carbamate esters, and novel compounds in said method. Phenolic carbamate esters are...
4078015 Copolymerizable compositions and method of making the same  
Useful copolymerizable compositions include 10 to 50 parts by weight of (I) a polymerizable diurethane monomer having the general formula ##STR1## wherein R 1 is --H; or --CH 3 ; R 2 is --H;...
4076945 Method for making urethane-terminated polycarbodiimides and products thereof  
This invention concerns a method of making a urethane-terminated polycarbodiimide and the product resulting therefrom wherein the product displays unique hydrolytic degradation stabilization...
4054592 Urethanes containing two perfluoroalkylthio groups  
Perfluoroalkylthio glycols and esters thereof can be prepared by the free-radical catalyzed addition of a perfluoroalkylthiol to an acetylenic alcohol or ester thereof. The compounds obtained are...
4052437 Process for producing urethane from nitro compounds, hydroxyl compounds and carbon monoxide using rhodium oxide catalysts  
In the process for preparing a urethane, particularly an aromatic urethane, by the reaction of an organic nitro compound, particularly an aromatic nitro compound, carbon monoxide, and an organic...
4052420 Process for producing diurethane from dinitro compounds, hydroxyl compounds and carbon monoxide  
In the process for preparing a diurethane, particularly an aromatic diurethane, by the reaction of an organic dinitro compound, particularly an aromatic dinitro compound, carbon monoxide, and an...
4045472 Urethane polythiols  
The novel urethane polythiols of this invention are prepared by reacting: (a) a mono-, di-, or trihydric polythiol with a polymeric isocyanate; or (b) a di- or trihydric polythiol with a diisocyanate.
4041139 Recovery of selenium from urethane solutions  
A process for the recovery of selenium by liquid-liquid extraction from a urethane solution containing selenium compounds by contacting the selenium-containing urethane solution at a suitable...
4038375 Process for the recovery of selenium from selenium-containing urethane solutions  
A process for the recovery of selenium from a urethane solution containing selenium compounds by contacting the selenium-containing urethane solution at a suitable temperature with an aqueous...
4029585 Aqueous dispersions of perfluoroalkyl esters for treating textiles  
Dry soil resistance and nonflame propagating characteristics are insured in textile fibers by applying thereto an aqueous dispersion containing a perfluoroalkyl ester of a carboxylic acid of from 3...
4024281 N,N-bis[2-(3-substituted-4-hydroxyphenyl)-ethyl or -2-hydroxyethyl]-polymethylenediamines  
N,N'-Bis[2-(3-substituted-4-hydroxyphenyl)-ethyl or -2-hydroxyethyl]-polymethylenediamines having β-adrenergic stimulant activity particularly as selective bronchodilators, are prepared generally...
4024178 Fluoroaliphatic radical containing carbodiimides  
Durably launderable and dry-cleanable repellency to water and oil is conferred on fabrics consisting essentially completely of hydrophobic synthetic fibers by application of a blend of a...
4011311 Applicator stick  
A gel type applicator stick of adhesive, deodorant or other dispersoid containing in percentages by weight from 0.01 to 45% dispersoid, 10 to 90% water or aqueous solvent and from 5 to 40% of a gel...
4001298 Triiodized N-methyldicarboxylic acid anilides  
Triiodized N-methyldicarboxylic acid anilides of the Formula ##STR1## wherein R 1 is hydrogen, halogen, carboxyl, N-monoacylamino, N-monoalkoxyacylamino, N-alkyl-N-acylamino,...
Matches 351 - 400 out of 511 < 1 2 3 4 5 6 7 8 9 10 11 >